Two or more API queries - refresh error

In Desktop version  I am using Function to get token and pass it  to actual json API queries (10+), but Function feels like doesn't work for API resfresh when I publish data to Power Bi, how can I get data for several queries without Function?
Curently I embed login & pass into each query header & I am getting error on refresh.
In my case token is valid for 15 min, every time I call I am getting new token. 
 
 
Last refresh failed: Thu May 19 2016 08:15:15 GMT-0800 (Alaskan Daylight Time)
Can't connect to the data source.Hide details
Data source type:
Data source error: The credentials provided for the Web source are invalid. (Source at https://api.linkgoeshere.com/reportnamegoeshere.)
Cluster URI: WABI-WEST-US-redirect.analysis.windows.net
Activity ID: 9cf81dee-f58c-4fac-aa54-dbb269d0ee85
Request ID: ad596f2c-9efb-032a-e15d-90822eb6351b
Time: 2016-05-19 16:15:15Z